Switch

Abstract

The utility model relates to the field of electrical equipment, in particular to a switch. Comprising a surface cover assembly comprising a handle; a housing; the linkage assembly comprises a wiring terminal which comprises a plurality of contact knives; the moving contact assembly comprises contact point parts of which the number is the same as that of the contact knives, and the moving contact assembly is rotationally arranged in the shell; the long swing arm comprises a movable end and a fixed end, and the fixed end is connected to the moving contact assembly; the elastic component is used for connecting the movable end of the long swing arm and the handle, and the handle controls the elastic component to swing; in a switching-on state, the contact knife is in contact with the contact part; according to the utility model, the length of the arm of force is increased through the long swing arm, the pulling force needing to be applied is reduced, the existence time of electric arcs generated by switching on and switching off between the contact knife and the contact part can be effectively shortened by means of instantaneous contraction of the elastic component, and the service life can be effectively prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electrical equipment, especially a switch. BACKGROUND

[0002] The disconnector is a kind of electrical equipment used in power system, usually used to disconnect or connect circuit, to ensure the safety of equipment when maintenance or overhaul is carried out. It can form physical isolation in circuit, prevent current from passing through, ensure that workers will not be shocked during maintenance, mainly used to provide obvious disconnecting point in circuit, ensure the safe isolation of circuit during maintenance or maintenance.

[0003] Usage scenarios:

[0004] Maintenance and overhaul: when power equipment needs to be repaired, checked or replaced, the disconnector can effectively cut off the circuit and prevent current from continuing to flow, to avoid electric shock and other safety problems.

[0005] High-voltage electrical equipment: the disconnector is widely used in high-voltage electrical equipment, such as transformer substation and power distribution system.

[0006] The multi-break disconnector on the market usually directly twists the shaft of the moving contact to realize opening and closing, which is too laborious, and the manual adjustment is slow. The electric arc generated during opening and closing exists for a long time, and the energy of the electric arc is released on the shell, causing the service life of the shell to be short.

[0007] Therefore, it is urgent to provide an improved technical solution to solve the above technical problems. UTILITY MODEL CONTENT

[0008] The utility model aims at the above-mentioned technical problems, and provides a switch with the technical effect of saving labor and long service life.

[0009] Therefore, the utility model provides a switch, which comprises:

[0010] The face cover assembly comprises a handle.

[0011] The shell comprises a handle.

[0012] The linkage assembly comprises:

[0013] The terminal comprises a plurality of contact blades.

[0014] The moving contact assembly comprises a plurality of contact points, which are rotatably arranged in the shell.

[0015] The long swing arm comprises a movable end and a fixed end, and the fixed end is connected to the moving contact assembly.

[0016] The elastic member is used for connecting the movable end of the long swing arm with the handle, and the handle controls the swing of the elastic member.

[0017] When in the closing state, the contact blade is in contact with the contact point part.

[0018] Further, the fixed end is arranged at the middle position of the long swing arm, the other end of the long swing arm opposite to the movable end is hinged on the shell, and the fixed end is eccentrically hinged on the movable contact assembly.

[0019] Further, one end of the long swing arm is fixedly connected on the movable contact assembly.

[0020] Further, two sets of shells and linkage assemblies are arranged oppositely, the accommodating cavities for accommodating the long swing arms are formed between the shells, and the movable ends of the two long swing arms are fixedly connected.

[0021] Further, the two or two-one sets of shells can be assembled side by side.

[0022] Further, the face cover assembly further comprises a sliding block arranged to slide along the Z direction driven by the handle, and the elastic member is connected between the sliding block and the long swing arm.

[0023] Further, a spring shaft arranged to slide along the Y direction is further arranged on the sliding block, and one end of the elastic member is hooked on the spring shaft.

[0024] The limiting piece is arranged with two on the shell, the limiting piece is arranged with a curved surface, and the limiting piece is in abutment with the spring shaft.

[0025] The limiting clamping groove is arranged on the shell and is used for limiting the swing range of the spring shaft.

[0026] Further, the movable contact assembly comprises:

[0027] The disc body is arranged with an accommodating groove on the circumferential side, the accommodating groove is arranged with two superimposed contact point parts, a gap is formed between the contact point parts, and a notch penetrating to the edge is arranged on one side of the disc body.

[0028] Further, the utility model further comprises:

[0029] The booster plate is hinged on the shell at one end, the other end can be in abutment with the sliding block, a lever is arranged at the middle position of the booster plate, and the end of the lever is hooked on one side of the long swing arm.

[0030] Further, the eccentric hole is arranged on one side of the movable contact assembly, the eccentric rod is arranged on the side wall of the long swing arm and matched with the eccentric hole, and the eccentric rod can slide and rotate in the eccentric hole.

[0031] The utility model has the beneficial effects that:

[0032] 1. The utility model discloses a long swing arm increases the length of the lever arm, reduces the tension that needs to exert, and relies on the existence time of the electric arc that the closing and opening of the contact blade and contact point part produces is shortened effectively by the instantaneous contraction of the elastic component, and the service life can be effectively prolonged.

[0033] 2. The utility model discloses the side of disc body is equipped with the notch that reaches the disc body edge, and this notch is convenient for placing the contact blade in the accommodating groove, makes the contact blade and moving contact component easy cooperation installation, and when opening, the contact blade corresponds at the notch position, can effectively prevent the contact blade from creeping effect. DRAWINGS

[0034] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0035] Figure 2 It is the cooperation structure schematic diagram of the face cover main part and shell of the utility model;

[0036] Figure 3 It is the installation structure schematic diagram of spring shaft of the utility model;

[0037] Figure 4 It is the installation structure schematic diagram of two shells of the utility model;

[0038] Figure 5 It is the three-dimensional structure schematic diagram of single shell of the utility model;

[0039] Figure 6 It is the structure schematic diagram of moving contact component of the utility model;

[0040] Figure 7 It is the cooperation structure schematic diagram between slider and spring shaft of the utility model;

[0041] Figure 8 It is the structure schematic diagram of eccentric hole of the utility model.

[0042] Marked in the drawing as:

[0043] 1, face cover main part, 2, first sliding groove, 3, slider, 4, shell, 5, terminal, 6, contact blade, 7, contact point part, 8, long swing arm, 9, elastic component, 10, handle, 11, accommodating cavity, 12, spring shaft, 13, limit piece, 14, limit slot, 15, disc body, 16, accommodating groove, 17, notch, 18, booster plate, 19, lever, 20, eccentric hole, 21, eccentric rod, 22, arc guide groove, 23, rivet pipe, 24, hook groove. DETAILED DESCRIPTION

[0044] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly described. Obviously, the described embodiments are a part rather than all of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present application.

[0045] Embodiment 1:

[0046] The embodiment provides a switch, which comprises:

[0047] The face cover assembly comprises a handle 10;

[0048] The shell 4;

[0049] The linkage assembly comprises:

[0050] The terminal 5 comprises a plurality of contact blades 6;

[0051] The movable contact assembly comprises a plurality of contact portions 7 which are arranged in the shell 4 in a rotating manner and have the same number as the contact blades 6;

[0052] The long swing arm 8 comprises a movable end and a fixed end, and the fixed end is connected to the movable contact assembly;

[0053] The elastic member 9 is used to connect the movable end of the long swing arm 8 and the handle 10, and the handle 10 controls the swing of the elastic member 9;

[0054] When in the closed state, the contact blades 6 are in contact with the contact portions 7.

[0055] The switch of the embodiment is divided into two parts, the shell 4 part and the internal structure and the face cover assembly. The face cover assembly is installed on the front of the shell 4 which is a position convenient for observation. The face cover assembly comprises a face cover main body 1 and a handle 10 which is rotatably connected to the face cover main body 1. For the convenience of installation, the shell 4 is divided into two parts, i.e. a left part and a right part. The linkage assembly comprises the terminal 5, the movable contact assembly, the long swing arm 8 and the elastic member 9. The terminal 5 is arranged on the upper and lower sides of the shell 4 and is used to connect the zero fire line. The terminal 5 can also be additionally provided for connecting the ground wire. The wire is fixed by screwing and abutting. The terminal 5 comprises the contact blade 6, i.e. the static contact. The contact blade 6 is arranged on the upper and lower sides of the movable contact assembly or can be arranged at any position on the peripheral side. The contact blade 6 is provided with an arc guiding groove 22 which is used to prevent the arc generated when closing from spreading. Magnets are installed on the shell 4 wall on the two sides of the contact blade 6. The magnets generate a magnetic blowing effect to guide the arc and prevent the arc from releasing energy to the shell 4, thereby causing damage to the shell 4. The shell 4 can be effectively protected. The peripheral side of the swing direction of the contact portion in the shell 4 is provided with a grid corresponding to the contact portion. The grid is arranged in a staggered manner, thereby achieving arc extinguishing.

[0056] The moving contact assembly comprises a disc body 15, the disc body 15 is internally provided with contact parts 7 which are electrically connected with each other, the contact parts 7 are made of conductive material, the disc body 15 is provided with shafts on both sides, the shafts are fitted in the shell 4, so that the moving contact assembly can be selected, the contact parts 7 can change positions by rotating, when closing is needed, the contact blade 6 and the contact parts 7 are in contact, realizing the energization of the zero and fire lines, when opening is needed, the contact blade 6 and the contact parts 7 are staggered, realizing the simultaneous disconnection of the moving contact assembly from the zero and fire lines, realizing double-break or multi-break opening, improving the breaking capacity, by dividing the circuit into two independent breaking points, each breaking point is separated at the same time, thereby effectively reducing the energy borne by a single breaking point when opening a short-circuit current. This design significantly improves the breaking capacity of the circuit breaker, and can handle higher short-circuit currents.

[0057] The double-break point design can effectively avoid current short-circuit and arc generation, reduce the influence range of short-circuit faults, and thereby improve the reliability of the power grid.

[0058] The long swing arm 8 comprises a movable end and a fixed end, the long swing arm 8 is generally arranged on the outer wall of the shell 4, the fixed end of the long swing arm 8 is fixedly connected to the center position of the disc body 15 of the moving contact assembly, when the movable end is pulled to move up and down, the long swing arm 8 swings up and down, the movable end is at two positions of up and down, which correspond to the open and closed states of the switch respectively, the length of the force arm is increased by the long swing arm 8, and the pulling force required is reduced, a swing rod which swings up and down by rotating the handle 10 can be arranged on the handle 10, one end of the elastic member 9 is fixed to the swing rod, and the other end is fixed to the movable end of the long swing arm 8, when the one end of the elastic member 9 swings up and down by operating the handle 10, the energy storage property of the elastic member 9 can make the closing of the long swing arm 8 have hysteresis, the position of the movable end of the long swing arm 8 can be instantaneously adjusted by relying on the instantaneous recovery property of the elastic member 9, after the handle 10 is adjusted from the open position to the closed position, the elastic member 9 instantaneously contracts to pull the long swing arm 8 to the closed position, which can effectively shorten the existence time of the arc generated between the contact blade 6 and the contact parts 7 during closing and opening, and can effectively prolong the service life.

[0059] The elastic member 9 generally uses a tension spring, and the two ends are respectively hung on the handle 10 and the long swing arm 8.

[0060] Embodiment 2

[0061] The embodiment provides a switch, in addition to the technical solutions of the above-mentioned embodiments, further having the following technical features.

[0062] The fixed end is arranged at the middle position of the long swing arm 8, the other end of the long swing arm 8 opposite to the movable end is hingedly connected to the shell 4, and the fixed end is eccentrically hingedly connected to the moving contact assembly.

[0063] Another connection form of the long swing arm 8 is to set the fixed end at the middle position of the long swing arm 8, the fixed end refers not only to the end, but also the mounting position of the long swing arm 8 on the disc body 15, the fixed end is hinged at the eccentric position of the disc body 15, the other end of the long swing arm 8 opposite to the movable end is hinged on the shell 4, or is hinged at the center position of the disc body 15, when hinged on the shell 4, the eccentric hole 20 needs to be arranged on the disc body 15, the eccentric rod 21 matched with the eccentric hole 20 is arranged on the side wall of the long swing arm 8, the eccentric rod 21 can slide and rotate in the eccentric hole 20, and the eccentric rod 21 is convenient to move; through the above method, the pulling force for starting the movable end of the long swing arm 8 can be further reduced, and the handle 10 is more labor-saving, and the rotation of the handle 10 is more labor-saving.

[0064] Embodiment 3

[0065] The embodiment provides a switch, in addition to comprising the technical scheme of the above embodiment, further has the following technical features.

[0066] The two groups of shells 4 and the linkage assembly are arranged opposite to each other, the accommodating cavities 11 for accommodating the long swing arms 8 are formed between the shells 4, and the movable ends of the two long swing arms 8 are fixedly connected.

[0067] The two groups of shells 4 can be assembled with each other and are fixedly connected through the rivet pipes 23, the long swing arms 8 are arranged opposite to each other, the long swing arms 8 are adjacent, the accommodating cavities 11 for accommodating the long swing arms 8 are formed between the shells 4, the long swing arms 8 can be protected, and the switch is more beautiful, the movable ends of the two long swing arms 8 can be screw-connected to a fixed rod, the two long swing arms 8 can be integrally bent and formed, or are connected in a welded mode, so that the two long swing arms 8 can swing synchronously, and the above mode can realize assembly of multiple shells 4, the number of the terminal blocks 5 is increased, and multiple wires can be connected.

[0068] The two groups of shells 4 can be assembled side by side.

[0069] The two groups of shells 4 are assembled together, and are connected together through the rivet pipes 23, or the two groups of shells 4 and the single shell 4 are assembled together, so that multiple terminal blocks 5 are arranged.

[0070] Embodiment 4

[0071] The embodiment provides a switch, in addition to comprising the technical scheme of the above embodiment, further has the following technical features.

[0072] The cover assembly further comprises a sliding block 3 arranged to slide in the Z direction and driven by the handle 10, and the elastic member 9 is connected between the sliding block 3 and the long swing arm 8.

[0073] The sliding groove is arranged on the face cover body 1, the sliding block 3 is arranged in the sliding groove and is connected in the Z direction, the gear is arranged on the handle 10, the rack is arranged on the sliding block 3, the gear and the rack are matched, when the handle 10 rotates, the sliding block 3 can slide up and down in the Z direction, one end of the elastic member 9 is fixed on the movable end of the long swing arm 8, the other end is fixed on the sliding block 3, the end of the elastic member 9 away from the long swing arm 8 can move straight up and down, the movement structure of the elastic member 9 is more stable, the elastic member 9 cannot swing left and right, the long swing arm 8 cannot be subjected to the force in the left and right directions, the force between the long swing arm 8 and the disc body 15 in the direction except the torsion is reduced, the structure is more stable, and the service life is increased.

[0074] Embodiment 5

[0075] The embodiment provides a switch, in addition to comprising the technical scheme of the above embodiment, and has the following technical features.

[0076] The spring shaft 12 is arranged on the sliding block 3 and slides in the Y direction, and one end of the elastic member 9 is hooked on the spring shaft 12.

[0077] The limiting piece 13 is arranged on the shell 4, and the limiting piece 13 is provided with a curved surface and abuts against the spring shaft 12.

[0078] The limiting clamping groove 14 is arranged on the shell 4 and is used for limiting the swing range of the spring shaft 12.

[0079] The first sliding groove 2 is arranged on the sliding block 3 and opens in the Y direction, the spring shaft 12 is arranged in the first sliding groove 2, the first sliding groove 2 can be open or closed, the open sliding groove is convenient for mounting the spring shaft 12, a plurality of hook grooves 24 are arranged on the spring shaft 12, the hook grooves 24 are used for hooking the end of the main tension spring, convenient for mounting and stable in structure, the limiting piece 13 is arranged on all the shells 4, and two limiting pieces 13 are arranged on the outermost sides of the shells 4, the limiting piece 13 is provided with a curved surface, and the limiting clamping groove 14 is arranged on the end face of the shell 4 close to the spring rod, the limiting clamping groove 14 can be open or closed, the open limiting clamping groove is convenient for mounting, and the closed limiting clamping groove is stable in structure, the above mode can keep the elastic member 9 in a state of a certain length, the elastic member 9 is always in an energy storage state in the movement process of the spring rod, the limiting clamping groove 14 can limit the movement range of the spring rod, the swing of the long swing arm 8 can be realized when the spring shaft 12 reaches two end points, and the elastic member 9 is prevented from being damaged due to excessive elongation caused by excessive movement.

[0080] It should be noted that the spring shaft 12 can be used in cooperation with a plurality of elastic members 9 of the shells 4, and the structure is simplified.

[0081] Embodiment 6

[0082] The embodiment provides a switch, which further has the following technical features in addition to the technical solutions of the above embodiments.

[0083] The moving contact assembly comprises:

[0084] The disc body 15 is provided with the accommodating groove 16 on the circumferential side, two superimposed contact sections 7 are arranged in the accommodating groove 16, a gap is formed between the contact sections 7, and the notch 17 penetrating to the edge of the disc body 15 is arranged on one side of the disc body 15.

[0085] The disc body 15 is provided with the accommodating groove 16 on the circumferential side, two superimposed contact sections 7 are arranged on the two sides in the accommodating groove 16, a gap is formed between the contact sections 7, the contact blade 6 is in contact with the contact sections 7 in the gap, the contact area is increased, and the electric conduction capacity is enhanced; the notch 17 penetrating to the edge of the disc body 15 is arranged on one side of the disc body 15, the notch 17 facilitates the contact blade 6 to be arranged in the accommodating groove 16, the contact blade 6 and the moving contact assembly are easily installed in cooperation, and when the switch is opened, the contact blade 6 corresponds to the position of the notch 17, and the contact blade 6 can be effectively prevented from creeping.

[0086] Embodiment 7:

[0087] The embodiment provides a switch, which further has the following technical features in addition to the technical solutions of the above embodiments.

[0088] Further comprising:

[0089] The power assisting plate 18 is hingedly connected to the shell 4 at one end and abuttingly connected to the sliding block 3 at the other end, a lever 19 is arranged at the middle position of the power assisting plate 18, and the end of the lever 19 is hooked to one side of the long swing arm 8.

[0090] The power assisting plate 18 is hingedly connected to the shell 4 at one end and abuttingly connected to the sliding block 3 at the other end, a lever 19 is arranged at the middle position of the power assisting plate 18, and the end of the lever 19 is hooked to one side of the long swing arm 8.

[0091] The embodiments of the application are described above with reference to the accompanying drawings, and the embodiments and the features in the embodiments in the application can be combined with each other without conflict, the application is not limited to the above-described specific embodiments, the above-described specific embodiments are only illustrative but not restrictive, and a person of ordinary skill in the art can make many forms under the inspiration of the application without departing from the purpose of the application and the protection scope of the claims, and all the forms belong to the protection scope of the application.

Claims

1. A switch, characterized by The utility model relates to a kind of movable contactor, including: Face cover assembly, including handle (10); Shell (4); Linkage assembly, linkage assembly includes: Terminal (5), including several contact blades (6); Moving contact assembly, including the same number of contact parts (7) with contact blade (6), rotation is arranged in shell (4); Long swing arm (8), long swing arm (8) includes movable end and fixed end, fixed end is connected on moving contact assembly; Elastic member (9), elastic member (9) is used to connect the movable end of long swing arm (8) with handle (10), and handle (10) controls elastic member (9) swing; When being in the closing state, contact blade (6) is contacted with contact part (7).

2. A switch according to claim 1, characterised in that Fixed end is arranged at the middle position of long swing arm (8), the other end of long swing arm (8) opposite movable end is hinged on shell (4), and fixed end is eccentrically hinged on moving contact assembly.

3. A switch according to claim 1, wherein One end of long swing arm (8) is fixedly connected on moving contact assembly.

4. A switch according to claim 1, wherein Including two sets of shell (4) and linkage assembly, long swing arm (8) is oppositely arranged, and accommodating cavity (11) for accommodating long swing arm (8) is formed between shell (4), and movable end of two long swing arms (8) is fixedly connected.

5. A switch according to claim 4, wherein Two or two one group of shell (4) can be assembled side by side.

6. A switch according to claim 1, wherein Face cover assembly further includes: sliding block (3) is slidably arranged along Z direction by handle (10) driving, and elastic member (9) is connected between sliding block (3) and long swing arm (8).

7. A switch according to claim 6, wherein Spring shaft (12) is also arranged on sliding block (3) and slides along Y direction, and one end of elastic member (9) is hooked on spring shaft (12); Limiting piece (13), two limiting pieces (13) are arranged on shell (4), and curved surface is arranged on limiting piece (13), limiting piece (13) is abutted with spring shaft (12); Limiting clamping groove (14), limiting clamping groove (14) is arranged on shell (4), and is used for limiting the swing range of spring shaft (12).

8. A switch according to claim 1, wherein, Moving contact assembly includes: Disc body (15), the circumferential side of disc body (15) is provided with accommodating groove (16), two superimposed contact parts (7) are arranged in accommodating groove (16), gap is formed between contact part (7), and notch (17) is arranged on one side of disc body (15) and penetrates to the edge.

9. A switch according to claim 1, wherein, Further including: Power assisting plate (18), one end of power assisting plate (18) is hinged on shell (4), the other end can be abutted with sliding block (3), and pull lever (19) is arranged at the middle position of power assisting plate (18), and the end of pull lever (19) is hooked on one side of long swing arm (8).

10. A switch according to claim 3, wherein, Eccentric hole (20) is arranged on one side of moving contact assembly, eccentric rod (21) is arranged on the side wall of long swing arm (8) and matched with eccentric hole (20), and eccentric rod (21) can slide and rotate in eccentric hole (20).

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